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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Cell+Biol
2013 ; 203
(5
): 815-33
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gab.com Text
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FSGS3/CD2AP is a barbed-end capping protein that stabilizes actin and strengthens
adherens junctions
#MMPMID24322428
Tang VW
; Brieher WM
J Cell Biol
2013[Dec]; 203
(5
): 815-33
PMID24322428
show ga
By combining in vitro reconstitution biochemistry with a cross-linking approach,
we have identified focal segmental glomerulosclerosis 3/CD2-associated protein
(FSGS3/CD2AP) as a novel actin barbed-end capping protein responsible for actin
stability at the adherens junction. FSGS3/CD2AP colocalizes with E-cadherin and
?-actinin-4 at the apical junction in polarized Madin-Darby canine kidney (MDCK)
cells. Knockdown of FSGS3/CD2AP compromised actin stability and decreased actin
accumulation at the adherens junction. Using a novel apparatus to apply
mechanical stress to cell-cell junctions, we showed that knockdown of FSGS3/CD2AP
compromised adhesive strength, resulting in tearing between cells and disruption
of barrier function. Our results reveal a novel function of FSGS3/CD2AP and a
previously unrecognized role of barbed-end capping in junctional actin dynamics.
Our study underscores the complexity of actin regulation at cell-cell contacts
that involves actin activators, inhibitors, and stabilizers to control adhesive
strength, epithelial behavior, and permeability barrier integrity.
|Actins/*metabolism
[MESH]
|Adaptor Proteins, Signal Transducing/analysis/chemistry/*physiology
[MESH]